Hi All,
I recently purchased a Buffalo WZR-600DHP model router. I have 5 static IPs and am attempting to setup One-to-One NATing.
I had One-to-One NATing setup on my previous DD-WRT router (Linksys E4200). I took the text from my startup and firewall scripts on my previous Linksys router running DD-WRT (text below) and placed them into my new Buffalo router with DD-WRT pre-installed.
After testing I found the specific command that breaks it...I discovered that the following command in the script causes the mentioned internal IP to not have internet access any further.
iptables -t nat -I POSTROUTING -s [Internal-IP] -j SNAT --to [Public-IP]
Systems not mentioned in the one-to-one NATing do not have this problem and continue to function with internet access.
For testing purposes I have tried limiting the script down to just one IP to NAT on one system. Below is a sample of those commands:
WANIF=`get_wanface`
ifconfig $WANIF:1 [Public-IP] netmask [Mask] broadcast [Broadcast]
iptables -t nat -I PREROUTING -d [Public-IP] -j DNAT --to [Internal-IP]
iptables -t nat -I POSTROUTING -s [Internal-IP] -j SNAT --to [Public-IP]
Product Info:
-Model: WZR-600DHP
-Firmware of Buffalo: DD-WRT v24SP2-MULTI (11/04/12) std - build 20180
-Firmware of old Linksys on DD-WRT where this is working: DD-WRT v24-sp2 (12/12/11) big - build 18000
-ISP: Comcast
Thanks in advance!
